Wavering between 3/4 tbh, it's a 'good, but...' kind of knife
If you like it I'd say there's nothing wrong with it, the action just feels less crisp and the pivot less smooth than I am used to with other QSP models. While very well built it is a touch chunky. I think both perceived weak points would probably be helped with a thinner blade stock.
The inlays and the handle overall are great, everything matches up perfectly and it's a well made heavy duty liner lock if that's what you're after. I have not adjusted the pivot yet so there's a chance this is more of a solid 4* than I'm giving it right now.